Polish ing-machine



(No Model.)

2 shethshe'et 1. A. P. BOARDMAN.

POLISHING lMACHINE.

No. 445,030. Patented Jan. 20,1891.

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2 Sheets-Sheet 2.

A. P. BOARDMAN.

PULISHING MACHINE.

No. 445,030. Patented 16.11-20, 1891.

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rre STATES PATENT ,'Oiricn.

ANSON I. BOARDMAN, OF VATERTOVN, XVISCONSIN.

PoLlsHlNeMAoi-HNE.

SPECIFICATION forming part of Letters Patent No. 445,030, dated January 20, 1891.

Application tiled April 7, 1890.

T all 10h/0m t may concern:

Be 1t known that I, ANsON I. BOARDMAN,

vof TWatertown, in the county of Jefferson and State of Wisconsin, have invented new and useful Improvements in Polishing-Machines; and I do hereby declare the following to be a full, clear, and exact description of said invention, reference being had to the accompanying drawings, and to the letters or figures of reference marked thereon, which form a part of this specication.

My invention relates particularly and chiefly tothe means for adjusting the feed-rollers, for supporting and adjusting the upper feedroll carrying-frame, and to the devices for vibrating the polishing-cylind ers.

My improvements are in that class of polishingmachines which have sandpaper-covered cylinders located and arranged in the lower or body part of the machine.

In the drawings, Figure 1 is a side eleva- 'tion of my complete device, the lower porrelated thereto, partly in vertical section, for

adjusting the j ournal-bearing and for vibrating the cylinder. Fig. G is a plan of so much of the mechanism shown in Fig. 5 as is below the line G (i thereof, with related mechanismJ parts being broken away and in section to show interior construction.

A is the frame of the machine, which inchicles au upper portion A, supported above the lower or body part of the frame by rigid angled corner-posts C C, constructed integrally with the frame or made rigid thereto. I3 is a frame carrying the upper feed-rollers, which frame is supported movable vertically below the part A' and at a distance from the body of the frame A.

Three santbpaper-covered polishing-cylinders D D D, arranged transversely to the Serial No. 346,811. (No model.)

longer axis of the machine, are supported in journal-bearings adj ustably in the frame A. The number of cylinders used in a machine may be one or more; but it is desirable to use at least three cylinders to secure the best results. These cylinders are so located in the frame that the surface of the cylinder at its top projects slightly above the top surface or table of the frame A throughout the entire length of the cylinder. The journals of these cylinders have their bearings in boxes 11 11, each of which is provided with a rigid downwardly-extending leg 12, which enters, movably, a projecting part 13 of the frame, in and by which it is guided in its slight vertical movement. The leg 12 terminates in a continued screw-threaded bolt 1-1, fixed in the leg 12 or made integral therewith, on which bolt a screw-threaded nut turns, which nut bears above and below against the part 13 of the frame. The nut 15 has a worm-toothed periphery which meshes with a worm 1G, fixed on shaft 17. The shafts 17 each have their bearings at both ends eccentrieally in cylindrical blocks 1S, which blocks 1S have their bearings rotatably in the trame A. The blocks 1S are provided with pin-holes 19 19, adapted to receive a pin-wrench therein for rotating them, and a set-screw 2O turns through the frame against the block 1S to lock itin position when adjusted. By thus supporting the shafts 17 cccentrically in adjustable blocks 18 1S at both ends the shafts are adjusted at each end independently and a perfect align` nientsecured. l`he shafts 1717 are each provided with a beveled gear 21, meshing with a beveled gear 22, iixed on a short vertical shaft 23, which shaft has its bearings in a bracket il, integral with frame A. The shaft 23 is faced at 25 to permit of the application of a wrench thereto for rotating it. ly rotating a shaft 23 the corresponding cylinder may be raised or lowered, and should it be necessary to raise one end of the cylinder indepei'idently of the other end for the purpose of alignment the shaft 17 may be thrown away from the nuts 15 by rotating the blocks 1S, and by turning the nuts 15 either up or down the respective ends of the cylinders are raised or lowered. The cylinders are each driven independently of the other by a band- IOO I Of

wheel 26, fixed on its shaft, the band-wheel of the middle cylinder being located farther from the frame of the machine than the bandwheels on the other two shafts for the clearance of the belts.

For accomplishing the endwise vibration of the cylinders, aring 27 rides on each shaft l between two collars 28 2S, 'fixed to the shaft by setscrews, which ring is provided with a rigid pin 29, which projects into a diagonal slot 30 in the arm 3l. 'lhe rocking arm 3l is pivoted on a headed pin 32, fixed in the part 13 of the frame, 'lhe pin 32 is hollow longitudinally and is provided with a sliding block33, a part of which projects into a longitudinal slot 34 in the pin 32, and the pin 29 enters loosely the sliding block 33, which serves asa guide to steady and control the pin 29. An anti-friction bearingsleeve 35 is placed about the pin 29 in the diagonal slot 30. The pin 32 is secured in the frame bya rivet A set-screw or other equivalent means may be used for this purpose. The rocking arms 3l 3l are each connected movably to a connectingrod 37 by a wrist-pin 3S, and the rod 37 is hinged to a pitman 39, which rides on an eccentric 40, fixedon a shaft 4l, having its bearings in brackets affixed to the frame, which shaft is provided with a ban d-wheel 42, through which it is driven.

F eed-rollers 43 43, alternating with the sand-cylinders, are located in the frame A, and other feed-rollers 44 44 are located in the frame B directly above and parallel to the rollers To provide for the adjustment or alignment of these feed-rollers independently of each other and at each end, the rollers are all journaled at both ends eccentrically in cylindrical blocks 45 45. These blocks have their bearings rotatably in the frame A and B, respectively, and are each provided with pin-wrench holes 46 46 for rotating them,and set-screws 47 47 are provided, turning through the frame against the blocks severally for locking them in position when adjusted. The journals of the feed-rollers 43 43 are provided with beveled gears 48 48, which mesh'with beveled gears 49 49 on the horizontal shaft 50, which shaft 50 hasa gear meshing with a gear on the vertical shaft 5l, which is geared to the horizontal vshaft 52, which is provided with al band-wheel 53, through which it is driven, and the feed-rollers are rotated. The journals of the rollers 44 44 are also provided with beveled gear 54, which mesh with beveled gears 55 on horizontal shaft 56, which shaft 56 is geared to vertical shaft 57, which shaft 57 is geared to the shaft 52,by which itis driven and through which the rollers 44 44 are driven. The shaft 56 is geared to the shaft 57 by and through a sleeve 58, feathered and movable endwise on the shaft 57, which sleeve is provided with the gear which meshes directly with the gear on shaft 56 and is supported and rotates in a bracketon the frame. The shafts 50, 5l,

52, 56, and 57 have their bearings in brackets on the frames A and B, respectively. Four screw threaded vertical adjusting-rods 59 59, one at each corner of' the machine, have their feet severally movable in bearings therefor in the frame of the machine and extend upwardly through the part A'. being provided at the top with gears that mesh with gears on the horizontal shafts 60 60, havir'ig their bearings in brackets therefor affixed to the frame, one of the shafts 60 being provided with a cranlehandle 6l for rotating them, and thereby rotating the adj listing-rods 59 59. Each of .these rods 59 is provided with a square-headed sleeve-nut 62, traveling thereon, the head of which nut is received and guided in its vertical movement by the walls of the post C,whereby the sleevenut is held against rotary movement.

The frame B is provided at its four cor ners with horizontally-projecting lugs 63. having a vertical aperture through which the shank of the sleeve-nut 62 is received, the lug 63 resting on the head of the nut 62, whereby the frame B is supported. A spring 64 is coiled about the nut V62 and bears at its lower end against the lug 63 and at its upper end against a nut 65, turning by screw-thread on the sleeve-nut 62. The nut 65 is provided with apertures for receiving a pin-wrench therein for rotating it. The frame B is thus supported movably on the heads of the adjustable sleeve-nuts 62 62 and is movable thereon vertically, the springs 64 64 being adapted to permit a slight amount of yielding upwardly to the frame B under considerable strain. The frame B is raised or lowered by rotating the rods 59 59 through the crank-handle 6l and shafts 60 60,

Three transverse presser-plates 66 66, pre- Senting their faces downwardlyabout in a plane with the lowest part of the feed-rollers 44 44, are hinged at one side on the frame B, whereby they are adapted to be swung upwardly away from their normal position, (shown in Fig. 1,) if desired. These pressen plates are constructed to act by gravity only and are adapted to bear against the material being operated on directly above the sandpaper cylinders, and thereby obviate the slight vibration or quivering of the material that might otherwise occur.

What I claim as new, and desire to secure by Letters Patent, is

l. In a polishing-machine having rotating polishing-cylinders, the device at each end of the cylinders for adjusting them vertically, consisting cfa legextending rigidly downwardly from each of the journal-boxes,which leg is received and guided in a part of the frame arranged therefor, a screw-threaded bolt extending rigidly downwardly from and as a continuing part of the leg, and a nut turning thereon, which nut bears movably above and below against the frame, substantially as described.

2. In a polishing-machine having rotating IOO IIO

polishilig-cylinders, the combination, with legs extending downwardly from the journalboxes of the cylinders, which legs are provided with screw-threaded bolts, and nuts turning thereon bearing above and below against the frame, ot' a shaft. provided witha worm meshing with teeth on the nut on the f bolt aforesaid, which shaft has its bearings eccentrically in rotatable cylinders in the frame, and means for rotating the shaft, substantially as described.

3. In a polishing-machi ne having polishingcylinders provided with bearings permitting endwise movement, and a ring riding on the journal of the cylinder and having rotary but not endwise movement. thereon, which ring is provided with an outwardly-projecting pin, in combination with a rocking arm pivoted on the frame and provided with a diagonal slot in which the pin on the rings,` is received and by which it is moved as the rocking arm oscillates, and means, substantially as described, for oscillating the arm.

4. In a polishing-machine having a polishing-cylin der so jou rn aled as to be movable endwise, and a ring riding rotatably on the jour nal of the cylinder and provided wit-h a projecting pin, in combination with a rocking arm having a diagonal slot, which arm is pivoted on a hollow longitudinally-slotted pin affixed to the frame, a sliding block inserted and traveling in the hollow pivot-pin, into which block the pin on the ring ent-ers and by which it is steadied, and means, substantially as described, for oscillating the rotating arm.

5. In a machine having transverse feedrollers, cylindrical blocks in which the feedrollers are j ournaled eccentrically, the blocks being supported rotatably in the frame and provided with means for rotating them liniitedly, the blocks being adapted to adjust the feed-rollers vertically, substantially as described.

G. In a polishing-machine, afeed-rollerhav ing projecting journals, in combination with cylindrical blocks in which the journalshave their bearings eceentrically, the blocks being supported rotatably in the frame, and a setscrew turning through the frame against: the. block for locking itin position, substantially as described.

7. Inapolishing-machinehavingtransverse polishing-cylinders in the lower or body part of the frame, anda vertically-moving framelocated above the body of the frame, in combination with vertical scrcwfthreaded adjusting-rods having rotary but notendwise move nient in the frame, headed nuts having screwthreaded sleeves traveling on the adjustingrods, the nuts heilig held against rotation by ways in the frame, on which nuts the vert-ically-inoving frame is supported, and springs coiled about the sleeves ot the nuts, bearing against the 'frame and against other nut-s turning on the sleeves of the traveling nuts, substantially as described.

In testimony whereof I affix my signature in piesence of two witnesses.

ANSON P. BOARDMAN. Witnesses:

C. T. BENEDIOT, C. H. KEENEY. 

